* {
  box-sizing: border-box;
}

body {
  padding: 0;
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
  background-color: #111111;
}

.container {
  display: flex;
  width: 482px;
  height: 600px;
  flex-wrap: wrap;
}

.item {
  width: 20px;
  height: 20px;
  background-color: #1d1d1d;
  margin: 2px 2px;
  transition: all 2s ease;
  
}

.item.ease {
  background-color: #1d1d1d;
  animation: anim 2s ease;
}

@keyframes anim {
  100% {
    background-color: #1d1d1d;
  }
}
